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authorFranck Cuny <franck@fcuny.net>2024-09-22 13:24:30 -0700
committerFranck Cuny <franck@fcuny.net>2024-09-22 13:24:30 -0700
commit53db590eed6e90138583e01d2c391b05d2ba3b6f (patch)
treef1ce3408d360352a51a9f719a84bee20400635f4 /static/js
parentrender the TOC correctly for mobile and desktop (diff)
downloadfcuny.net-53db590eed6e90138583e01d2c391b05d2ba3b6f.tar.gz
add information about the fog cutter
Diffstat (limited to 'static/js')
-rw-r--r--static/js/carousel.js122
1 files changed, 122 insertions, 0 deletions
diff --git a/static/js/carousel.js b/static/js/carousel.js
new file mode 100644
index 0000000..f30f934
--- /dev/null
+++ b/static/js/carousel.js
@@ -0,0 +1,122 @@
+function createCarousel(images) {
+    const carousel = document.createElement('div');
+    carousel.className = 'carousel';
+    let currentIndex = 0;
+
+    // Create main image container
+    const mainImageContainer = document.createElement('div');
+    mainImageContainer.className = 'carousel-main-image';
+    carousel.appendChild(mainImageContainer);
+
+    // Create vignette container
+    const vignetteContainer = document.createElement('div');
+    vignetteContainer.className = 'carousel-vignettes';
+    carousel.appendChild(vignetteContainer);
+
+    // Function to update the main displayed image
+    function updateMainImage() {
+        mainImageContainer.innerHTML = '';
+        const img = document.createElement('img');
+        img.src = images[currentIndex];
+        img.style.width = '100%';
+        img.style.height = 'auto';
+        mainImageContainer.appendChild(img);
+    }
+
+    // Function to create vignettes
+    function createVignettes() {
+        vignetteContainer.innerHTML = '';
+        const containerWidth = carousel.offsetWidth;
+        const vignetteWidth = 120;
+        const vignetteHeight = 80;
+        const vignetteMargin = 10;
+        const maxVignettes = Math.floor(containerWidth / (vignetteWidth + vignetteMargin));
+
+        const startIndex = Math.max(0, currentIndex - Math.floor(maxVignettes / 2));
+        const endIndex = Math.min(images.length, startIndex + maxVignettes);
+
+        for (let i = startIndex; i < endIndex; i++) {
+            const vignette = document.createElement('div');
+            vignette.className = 'vignette';
+            if (i === currentIndex) vignette.classList.add('active');
+
+            const img = document.createElement('img');
+            img.src = images[i];
+            img.style.width = vignetteWidth + 'px';
+            img.style.height = vignetteHeight + 'px';
+            img.style.objectFit = 'cover';
+
+            vignette.appendChild(img);
+            vignette.addEventListener('click', () => goToImage(i));
+            vignetteContainer.appendChild(vignette);
+        }
+    }
+
+    // Function to go to a specific image
+    function goToImage(index) {
+        currentIndex = index;
+        updateMainImage();
+        createVignettes();
+    }
+
+    // Function to go to the next image
+    function nextImage() {
+        currentIndex = (currentIndex + 1) % images.length;
+        updateMainImage();
+        createVignettes();
+    }
+
+    // Function to go to the previous image
+    function prevImage() {
+        currentIndex = (currentIndex - 1 + images.length) % images.length;
+        updateMainImage();
+        createVignettes();
+    }
+
+    // Event listener for keyboard navigation
+    document.addEventListener('keydown', (e) => {
+        if (e.key === 'ArrowRight') nextImage();
+        if (e.key === 'ArrowLeft') prevImage();
+    });
+
+    // Initialize the carousel
+    updateMainImage();
+
+    // Use setTimeout to delay the initial creation of vignettes
+    setTimeout(() => {
+        createVignettes();
+    }, 0);
+
+    // Recalculate vignettes on window resize
+    window.addEventListener('resize', createVignettes);
+
+    return carousel;
+}
+
+// Function to initialize the carousel with specific images
+function initializeCarousel(containerId, images) {
+    document.addEventListener('DOMContentLoaded', () => {
+        const container = document.getElementById(containerId);
+        if (container) {
+            const carouselElement = createCarousel(images);
+            container.appendChild(carouselElement);
+
+            // Use ResizeObserver to detect when the carousel is fully rendered
+            const resizeObserver = new ResizeObserver(entries => {
+                for (let entry of entries) {
+                    if (entry.target === carouselElement) {
+                        createVignettes();
+                        resizeObserver.disconnect(); // Stop observing once vignettes are created
+                    }
+                }
+            });
+
+            resizeObserver.observe(carouselElement);
+        } else {
+            console.error(`Container with id "${containerId}" not found.`);
+        }
+    });
+}
+
+// Make the initializeCarousel function globally available
+window.initializeCarousel = initializeCarousel;